(CNN) - It's been nearly three weeks since word broke that President Obama planned to nominate James Comey to replace retiring Robert Mueller as FBI director.

But as of Wednesday, the White House hadn't made any moves on announcing Mueller's successor. His term ends in September, and with Congress out of town for much of August, that doesn't leave much time for the Senate to consider the president's nominee.FULL POST

Washington (CNN) - FBI Director Robert Mueller said Thursday that secret government surveillance programs disclosed by leaks of classified information have been conducted in adherence with the U.S. Constitution and federal laws.

"The legality has been ensured" by the Department of Justice, and special federal courts set up to handle surveillance issues "ruled and monitored these programs and again, ensured the legality," he told the House Judiciary Committee.

(CNN) - The FBI announced Thursday its agents are looking for a letter, this one directed to the Central Intelligence Agency, that it believes was similar to at least three other letters that contained ricin.

Letters were sent to a federal judge, a Spokane post office, President Barack Obama and Fairchild Air Force Base, the FBI said. Tests are being conducted on the letter sent to Fairchild Air Force Base to determine whether it - like those other three letter - contained ricin.

(CNN) - President Barack Obama plans to nominate James Comey to replace Robert Mueller as FBI director, officials familiar with the nomination process said Wednesday.

Comey is a former prosecutor who worked in New York and Virginia, taking on terrorism cases and prosecutions of executives from WorldCom, Adelphia and Imclone, according to an official biography. He served as deputy attorney general in President George W. Bush's administration.

(CNN) - Two key Republicans on the House Homeland Security Committee will press the Obama administration about the questioning of Boston bombing suspect Tamerlan Tsarnaev 2011, according to a GOP congressional source.

The FBI investigated Tsarnaev, who died this week after a late-night shoot-out with police, at the request of Russian authorities, according to a senior U.S. official. Tsarnaev and his younger brother Dzhokar, who was taken into custody a day after his brother's death, are originally from the Caucasus region and immigrated to the United States in the 2000s.FULL POST